Consolidation Whole Abdominal Intensity-Modulated Radiation Therapy (IMRT) in Advanced Ovarian Cancer

Inclusion Criteria: * histologically confirmed ovarian cancer or tube cancer or primary peritoneal carcinoma stage FIGO III * primary optimal debulking surgery * postoperative gross residual tumor ≤ 1cm ( R0, R1 oder R2 \< 1cm situation) * adjuvant chemotherapy with platin and taxane * complete remission after chemotherapy * Karnofsky performance score \> 60 * patients \>18 years of age * written informed consent Exclusion Criteria: * stage FIGO I or II * stage III with postoperative gross residual tumor \> 1cm * stage FIGO IV * recurrence situation * delayed wound healing post laparotomy * leucopenia \<2000/ml before radiotherapy * thrombocytopenia \<75000/ml before radiotherapy * clinically active renal, hepatic, cardiac, metabolic, respiratory, coagulation or hematopoietic disease * status post pelvic or abdominal radiotherapy * status post other cancer disease in the past 5 years (cervical cancer in situ, basal cell carcinoma, squamous cell carcinoma of the skin are excluded) * participation in another clinical trial